[mewzilla]

Surprise organ discovered in mice Mice are shown to have two thymus organs, not just one

Squeek.

[rstrahan]

Not necessarily, as the hormones in the feed may affect the drug tests. For example, it may increase the adverse affect of a drug, showing a higher incidence rate. Conversely, it may mask the negative effects of a drug, showing a false negative in relation to the control group.